Statistical reliability of decisions on controlled process faults

The article considers the issues of using control charts to detect the disruption of the technological process. The possible influence of measurement error on the correctness of decisions is considered. To ensure the statistical reliability of the decisions made, their plausibility, a priori probability is used. The effectiveness of assessing the compliance of the technological process with established standards is discussed, when the distributions of possible values of its parameters and errors of their measurements are uniform.